Improvement in rendering fabrics uninflammable



iii;- .u .l. .L .uJ U .L A LIED '1 Be it known that I, DONALD NIOOLL, of

I iFabrics, for the purpose of rendering the same V iUninfiammable, of which the following is a if, The object of this invention is to provide a facile means of rendering vegetable tissues uninflammable. The invention applies to cottmand linen fabrics, an I, 1 t e i i mquire aasormawhat ble according to my invention, it will be' 7 r fgtime of applying starch or .a stiffening ma- 3 I first prepare a mixture, in equal propor- V tions, of powdered borax and dextrine,moistthorough amalgamation.

; tion, say, of nine pounds of this substance to monia with the dextrine and borax mixture,

'starch, together with the .other materials,

:75 jseveral substances together in the mill.

DONALD NIOOLL, OF

1429267 1711.113 .I. ICEW 31 l31tan'cHnooM{ LONDON, ENGLAND.

IMPROVEMENT lN RENDERING FABRICS UNINFLA'MMABLE.

Specification forming part of Letters Patent No. 142,267, dated August 26, 1873; application filed To all whom it may concern:

Paternoster Row, in the city of London, manufacturer, have invented certain Improved Preparations applicable to Woven and other specification differenfit ra'th 'ent from that of the cotton and linen fabrics.

To render the textile fabrics non-infiamma lconvenient to give them this property at the ,terial thereto. In furtherance of this end, I

imay be used after the manner of ordinary laundresses starch. Thus, I take, for examfiour, or itsequivalent, four pounds. These I mix together in a mill, adding thereto ultra- To {this flour I add, say, eleven pounds of the compound, which I will now describe.

ened with water. These substances I place in a vessel, maintained at a heat somewhat .exceeding 200 Fahrenheit, to insure their To this mixture I add dry sulphate of ammonia in the proportwo pounds of the borax and dextrine, and mix the ingredients intimately, whereby a compound is produced suitable for admixture with the starch. When this is effected I reduce the Whole to fine powder by grinding. A dry compound is thus prepared, which may be employed like ordinary starch for stiffenin g woven fabrics.

Instead of combining the sulphate of am- :as above described, it may be added to the Without such preparatory combination, and a like result will be obtained by grinding the liahrenheit.

In treating paper according to my inven- January 28, 1873.

and of the dextrine a half an ounce for each; I gallon of the solution to be made. These l two substances I place in a closed vessel, and} rotate the same in a bath of steam or water a somewhat exceeding a temperature of 2009; When these substances havef been well mixed, I add the alum-water, close 5 up the vessel, and continue its rotation until",- all the ingredients are dissolved. 1

The solution thus obtained, if not required: for immediate use, is to be kept in closed vessels.

above-described solution, and it may then be I dried in'the manner now commonly practiced 7 by paper manufacturers.

I would remark that, although I have given definite proportions of the materials which I employ in the manufacture of the dry preparation and of the solution, yet I do not limit myself to those proportions, as they may I doubtless be varied without materially affectin g the desired result. The effect of the dextrine in these compounds is to fix the sulphate of ammonia in the fabrica result that is very imperfectly accomplished by starch.

Having now set forth the nature of my invention, and explained the manner of carry- 6 7 ing the same into eifect, I wish it to be' un' derstood that I do not claim the use of anyof the above-named materials separately; but

What I claim is The admixture with sul p hate of ammop ia preparations, for renderlng Woven and other fabrics uninfiammable, of dextrine, as above described, whereby the sulphate of ammonia The paper to be rendered uninflammable is j i to be steeped in or run through a bath of the, 1 V l 

